gr-resemble-diff-mode/gr-resemble-diff-mode_test.html

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<meta name="viewport" content="width=device-width, minimum-scale=1.0, initial-scale=1.0, user-scalable=yes">
<title>resemble-diff-mode</title>

<link rel="import" href="../node_modules/polymer/polymer.html">
<link rel="import" href="../node_modules/@polymer/test-fixture/test-fixture.html">
<link rel="import" href="../node_modules/iron-test-helpers/iron-test-helpers.html">
<link rel="import" href="./gr-resemble-diff-mode.html">

<script>void(0);</script>

<script src="../node_modules/webcomponents.js/webcomponents-lite.min.js"></script>
<script src="../node_modules/web-component-tester/browser.js"></script>
<script src="../node_modules/@polymer/sinonjs/sinon.js"></script>

<test-fixture id="basicFixture">
  <template>
    <gr-resemble-diff-mode>
    </gr-resemble-diff-mode>
  </template>
</test-fixture>

<script>
  suite('gr-resemble-diff-mode tests', () => {
    let element;
    let sandbox;

    setup(() => {
      sandbox = sinon.sandbox.create();
      element = fixture('basicFixture');
    });

    teardown(() => { sandbox.restore(); });

    test('test initialization', () => {
      assert.notEqual(element, null);
      assert.equal(element.baseImage, null);
      assert.equal(element.revisionImage, null);
    });

    test('_setImageDiffSrc', () => {
      const img = element.$.imageDiff;
      const src = 'data:image/png;base64,SGVsbG8=';
      assert.notOk(img.getAttribute('src'));
      element._setImageDiffSrc(src);
      assert.equal(img.getAttribute('src'), src);
    });

    test('_maybeIgnoreColors', () => {
      const dummyProcess = {
        ignoreColors: sandbox.stub(),
        ignoreNothing: sandbox.stub(),
      };
      element._maybeIgnoreColors(dummyProcess, false);
      assert.isFalse(dummyProcess.ignoreColors.called);
      assert.isTrue(dummyProcess.ignoreNothing.called);
      element._maybeIgnoreColors(dummyProcess, true);
      assert.isTrue(dummyProcess.ignoreColors.called);
    });

    test('_handleIgnoreColorsToggle', () => {
      sandbox.stub(element, 'reload');
      element._ignoreColors = false;
      assert.isFalse(element.$.ignoreColorsToggle.checked);
      MockInteractions.tap(element.$.ignoreColorsToggle);
      flushAsynchronousOperations();

      assert.isTrue(element._ignoreColors);
      assert.isTrue(element.reload.called);
    });

    test('calls reload', () => {
      sandbox.stub(element, 'reload');
      element.baseImage = {};
      assert.equal(element.reload.callCount, 0);
      element.revisionImage = {};
      assert.equal(element.reload.callCount, 1);
      MockInteractions.tap(element.$.ignoreColorsToggle);
      assert.equal(element.reload.callCount, 2);
    });
  });
</script>